diff --git a/core/3.1/pom_2.12.xml b/core/3.1/pom_2.12.xml
index 61e14b2e..e75044ab 100644
--- a/core/3.1/pom_2.12.xml
+++ b/core/3.1/pom_2.12.xml
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <name>Kotlin Spark API: Scala core for Spark 3.1+ (Scala 2.12)</name>
@@ -9,7 +8,7 @@
     <parent>
         <groupId>org.jetbrains.kotlinx.spark</groupId>
         <artifactId>kotlin-spark-api-parent-3.1_2.12</artifactId>
-        <version>1.0.4-SNAPSHOT</version>
+        <version>1.1.0</version>
         <relativePath>../../pom_2.12.xml</relativePath>
     </parent>
 
diff --git a/dummy/pom.xml b/dummy/pom.xml
index 0ba19443..3346b90c 100644
--- a/dummy/pom.xml
+++ b/dummy/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <artifactId>kotlin-spark-api-parent-3.1</artifactId>
         <groupId>org.jetbrains.kotlinx.spark</groupId>
-        <version>1.0.4-SNAPSHOT</version>
+        <version>1.1.0</version>
     </parent>
     <packaging>pom</packaging>
     <modelVersion>4.0.0</modelVersion>
diff --git a/examples/pom-3.1_2.12.xml b/examples/pom-3.1_2.12.xml
index 53b4ac18..6ddcd114 100644
--- a/examples/pom-3.1_2.12.xml
+++ b/examples/pom-3.1_2.12.xml
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
 
     <modelVersion>4.0.0</modelVersion>
 
@@ -10,7 +9,7 @@
     <parent>
         <groupId>org.jetbrains.kotlinx.spark</groupId>
         <artifactId>kotlin-spark-api-parent-3.1_2.12</artifactId>
-        <version>1.0.4-SNAPSHOT</version>
+        <version>1.1.0</version>
         <relativePath>../pom_2.12.xml</relativePath>
     </parent>
 
diff --git a/jupyter/pom.xml b/jupyter/pom.xml
index a6ed6ff7..53b4d77b 100644
--- a/jupyter/pom.xml
+++ b/jupyter/pom.xml
@@ -1,7 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 
     <modelVersion>4.0.0</modelVersion>
 
@@ -11,7 +9,7 @@
     <parent>
         <groupId>org.jetbrains.kotlinx.spark</groupId>
         <artifactId>kotlin-spark-api-parent-3.1_2.12</artifactId>
-        <version>1.0.4-SNAPSHOT</version>
+        <version>1.1.0</version>
         <relativePath>../pom_2.12.xml</relativePath>
     </parent>
     <packaging>jar</packaging>
diff --git a/kotlin-spark-api/3.1/pom_2.12.xml b/kotlin-spark-api/3.1/pom_2.12.xml
index 86fdaa14..cec18fe8 100644
--- a/kotlin-spark-api/3.1/pom_2.12.xml
+++ b/kotlin-spark-api/3.1/pom_2.12.xml
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
 
     <modelVersion>4.0.0</modelVersion>
 
@@ -10,7 +9,7 @@
     <parent>
         <groupId>org.jetbrains.kotlinx.spark</groupId>
         <artifactId>kotlin-spark-api-parent-3.1_2.12</artifactId>
-        <version>1.0.4-SNAPSHOT</version>
+        <version>1.1.0</version>
         <relativePath>../../pom_2.12.xml</relativePath>
     </parent>
     <packaging>jar</packaging>
diff --git a/pom.xml b/pom.xml
index 5bcd6653..b897a2b2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
     <description>Parent project for Kotlin for Apache Spark</description>
     <groupId>org.jetbrains.kotlinx.spark</groupId>
     <artifactId>kotlin-spark-api-parent-3.1</artifactId>
-    <version>1.0.4-SNAPSHOT</version>
+    <version>1.1.0</version>
     <packaging>pom</packaging>
 
     <properties>
@@ -267,7 +267,7 @@
     <scm>
         <connection>scm:git:https://github.com/JetBrains/kotlin-spark-api.git</connection>
         <url>https://github.com/JetBrains/kotlin-spark-api</url>
-        <tag>HEAD</tag>
+        <tag>3.1-1.1.0</tag>
     </scm>
     <distributionManagement>
         <repository>
diff --git a/pom_2.12.xml b/pom_2.12.xml
index 97f88ef4..ec30b4ba 100644
--- a/pom_2.12.xml
+++ b/pom_2.12.xml
@@ -8,7 +8,7 @@
   <parent>
     <groupId>org.jetbrains.kotlinx.spark</groupId>
     <artifactId>kotlin-spark-api-parent-3.1</artifactId>
-    <version>1.0.4-SNAPSHOT</version>
+    <version>1.1.0</version>
     <relativePath>pom.xml</relativePath>
   </parent>
   <packaging>pom</packaging>
diff --git a/scala-tuples-in-kotlin/pom_2.12.xml b/scala-tuples-in-kotlin/pom_2.12.xml
index adf62092..71ac55aa 100644
--- a/scala-tuples-in-kotlin/pom_2.12.xml
+++ b/scala-tuples-in-kotlin/pom_2.12.xml
@@ -8,7 +8,7 @@
     <parent>
         <groupId>org.jetbrains.kotlinx.spark</groupId>
         <artifactId>kotlin-spark-api-parent-3.1_2.12</artifactId>
-        <version>1.0.4-SNAPSHOT</version>
+        <version>1.1.0</version>
         <relativePath>../pom_2.12.xml</relativePath>
     </parent>